Stuck on 'Powered by KaiOS' screen after custom recovery reboot

[pattern-projects]

I was preparing to do a dump all. I went through the process successfully before. On trying it again the phone is stuck on the screen 'Powered by KaiOS'. I can't turn it off.

Steps taken before this:

- Recovery to SD Card

dd if=/dev/block/bootdevice/by-name/recovery of=/sdcard/recovery.img bs=2048

- Then pull to computer from there.

- Extract recovery and then initrd.img

- abootimg -x recovery.img

- abootimg-unpack-initrd

- Replace keys with keys.v12 (renamed to keys)

- Delete initrd

- Repack initrd

- abootimg-pack-initrd

- Update the recovery.img with new initrd.img file

- abootimg -u recovery.img -r initrd.img

- Rename recovery to custom_recovery and push to SD card

- Create backup of recovery

- dd if=/dev/block/bootdevice/by-name/recovery of=/sdcard/recovery-backup.img bs=2048

- Replace recovery with image from sdcard

- dd if=/sdcard/custom_recovery.img of=/dev/block/bootdevice/by-name/recovery

Recovery reboot from abd

I did not see it boot in to recovery. After leaving it for a couple minutes when I looked at it, it was on the 'Powered by' screen.

Is there a fix for this? Thanks

[Ivan Alex HC]

have you tried to remove the battery?

[pattern-projects]

I am not able to remove the battery. It is sealed inside. I do not have the tools or knowledge to remove it.

[pattern-projects]

Watching a teardown online it looks straightforward enough. I will have to get the tools to try it.

[Affe null]

It seems that the boot image is invalid for some reason. You are probably in fastboot mode. Try installing fastboot on your computer and enter the command 'fastboot reboot' while the phone is plugged in.

[pattern-projects]

Hi, I tried this just now. With phone connected 'fastboot reboot', the next line says '< waiting for any device >. It doesn't go any further.

Command 'fastboot devices' returns nothing :(

I have access to tools to remove the battery, will need to wait until Sunday to get hold of them.

Hoping it is the right decision to remove it.

[Ivan Alex HC]

have you tried to press for at least one minute the power button or power+volume? Sometime this works on my Doro.

[pattern-projects]

Ivan, I tried it just now. I held the power button for two minutes no luck. There is no volume buttons on the Nokia 800. I tried a combination of each button with the power button, no movement, unfortunately.

[PuriShnit]

I had a similar situation with my 800, I followed the instructions for removing the battery, but unfortunately reconnecting the battery didn't seem to work... the connection ribbon is quite delicate.

How about leaving the phone until the battery drains (may take quite long...)? Then you should be able to simply charge it & power it on in normal mode.

[pattern-projects]

The battery in fact ran out. It lasted about just under 24 hours stuck in that state with the screen on.

Fully charged it and turned it on, it started straight into normal mode. The recovery file was replaced as expected.

Not sure what caused the stall but it is resolved now.

I am very grateful you giving me this advise because I was considering taking it apart anyway, just out of curiosity.

I will leave it alone for the time being.

[pattern-projects]

I have tried to perform the boot from a custom recovery a number of times since and each time it freezes on that same screen.

I am not sure what causes this. First time doing it it worked as expected.